Blocks Page yields White screen after upgrade... and other issues

Hi,

I'm attempting to upgrade from 5 to 6 and I'm afraid my fears are being realized. I was hoping someone might have some suggestions:

Top among my concerns right now is that the Block admin page is inaccessible. Attempting to load it yields the white screen of death. Then on the following page I load I am given the following error message:

* warning: array_map() [function.array-map]: Argument #2 should be an array in /Applications/MAMP/htdocs2/shopforps09-4/html/modules/system/system.module on line 1015.
* warning: array_keys() [function.array-keys]: The first argument should be an array in /Applications/MAMP/htdocs2/shopforps09-4/html/modules/block/block.admin.inc on line 122.
* warning: array_flip() [function.array-flip]: The argument should be an array in /Applications/MAMP/htdocs2/shopforps09-4/html/modules/block/block.admin.inc on line 122.

* The block Masquerade was assigned to the invalid region left and has been disabled.
* The block Contact - Mailing Address was assigned to the invalid region right and has been disabled.
* The block Donate was assigned to the invalid region left and has been disabled.
* The block Facts was assigned to the invalid region right and has been disabled.
* The block GMap Nav was assigned to the invalid region right and has been disabled.
* The block Home - Shop by Location was assigned to the invalid region right and has been disabled.
* The block Learn More was assigned to the invalid region left and has been disabled.
* The block Newsletter Sign Up was assigned to the invalid region left and has been disabled.
* The block Shop by Category was assigned to the invalid region right and has been disabled.
* The block Shop by Letter was assigned to the invalid region content_top and has been disabled.
* The block Shop by Neighborhood was assigned to the invalid region right and has been disabled.
* The block Navigation was assigned to the invalid region left and has been disabled.
* The block Primary Links (Nice Menu) was assigned to the invalid region navbar and has been disabled.

Also, when I attempt to look at a node I get an error that looks something like:

* warning: include(/page-shopByLocation.php) [function.include]: failed to open stream: No such file or directory in /Applications/MAMP/htdocs2/shopforps09-4/html/includes/common.inc(1685) : eval()'d code on line 3.
* warning: include() [function.include]: Failed opening '/page-shopByLocation.php' for inclusion (include_path='.:/Applications/MAMP/bin/php5/lib/php') in /Applications/MAMP/htdocs2/shopforps09-4/html/includes/common.inc(1685) : eval()'d code on line 3.
* warning: include(/page_body.tpl.php) [function.include]: failed to open stream: No such file or directory in /Applications/MAMP/htdocs2/shopforps09-4/html/sites/all/modules/contemplate/contemplate.module(834) : eval()'d code on line 3.
* warning: include() [function.include]: Failed opening '/page_body.tpl.php' for inclusion (include_path='.:/Applications/MAMP/bin/php5/lib/php') in /Applications/MAMP/htdocs2/shopforps09-4/html/sites/all/modules/contemplate/contemplate.module(834) : eval()'d code on line 3.
* warning: array_map() [function.array-map]: Argument #2 should be an array in /Applications/MAMP/htdocs2/shopforps09-4/html/modules/system/system.module on line 1015.
* warning: array_keys() [function.array-keys]: The first argument should be an array in /Applications/MAMP/htdocs2/shopforps09-4/html/includes/theme.inc on line 1771.
* warning: Invalid argument supplied for foreach() in /Applications/MAMP/htdocs2/shopforps09-4/html/includes/theme.inc on line 1771.

Any input would be greatly appreciated as a lot of this is Greek to me.